EP 1138543 A1 20011004 - Driving force control system for four-wheel drive vehicles
Title (en)
Driving force control system for four-wheel drive vehicles
Title (de)
Antriebskraftsteuerungssystem für ein vierradgetriebenes Fahrzeug
Title (fr)
Système de commande de la force d'entraînement pour un véhicule à quatre roues motrices
Publication
Application
Priority
JP 2000091095 A 20000329
Abstract (en)
A driving force control system for a four-wheel drive vehicle is disclosed which enables the vehicle to smoothly start on a low- mu road surface, and is capable to distributing just required amounts of driving forces to auxiliary drive wheels depending on an actual accelerating condition of the vehicle, thereby improving the response and fuel economy of the vehicle. The four-wheel drive vehicle includes front wheels as main drive wheels, and rear wheels as auxiliary drive wheels. The driving force control system controls engagement forces of electromagnetic clutches to thereby control the driving forces (torques) distributed to the rear wheels. The 2/4WD . ECU of the driving force control system calculates a filtered vehicle acceleration XGF1F of the vehicle 2 based on a drive torque TD, and then calculates a basic VATC torque value VATC based on the calculated filtered vehicle acceleration XGF1F, for use in calculation of the final desired VATC torque value TOBJM of torque to be distributed to the rear wheels. <IMAGE>
IPC 1-7
IPC 8 full level
B60K 17/348 (2006.01); B60K 23/04 (2006.01); B60K 23/08 (2006.01); F16D 48/12 (2006.01)
CPC (source: EP US)
B60K 23/04 (2013.01 - EP US); B60K 23/0808 (2013.01 - EP US); B60W 2530/16 (2013.01 - EP US); B60W 2710/105 (2013.01 - EP US); B60W 2720/106 (2013.01 - EP US)
Citation (search report)
- [XA] US 5631829 A 19970520 - TAKASAKI TOSHIHARU [JP], et al
- [XA] US 5894904 A 19990420 - YAKOU TAKAYUKI [JP], et al
- [A] US 5947224 A 19990907 - KOUNO KAZUYUKI [JP]
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 1138543 A1 20011004; EP 1138543 B1 20040728; CA 2341300 A1 20010929; CA 2341300 C 20070605; DE 60104463 D1 20040902; DE 60104463 T2 20050120; JP 2001277882 A 20011010; JP 4082548 B2 20080430; US 2001027369 A1 20011004; US 6493623 B2 20021210
DOCDB simple family (application)
EP 01105701 A 20010307; CA 2341300 A 20010316; DE 60104463 T 20010307; JP 2000091095 A 20000329; US 81641001 A 20010326